CN1139032A - Wire electrode and process for producing wire electrode, particular for spark erosion process - Google Patents
Wire electrode and process for producing wire electrode, particular for spark erosion process Download PDFInfo
- Publication number
- CN1139032A CN1139032A CN96107223A CN96107223A CN1139032A CN 1139032 A CN1139032 A CN 1139032A CN 96107223 A CN96107223 A CN 96107223A CN 96107223 A CN96107223 A CN 96107223A CN 1139032 A CN1139032 A CN 1139032A
- Authority
- CN
- China
- Prior art keywords
- line electrode
- shell
- core
- kirsite
- copper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 19
- 238000009760 electrical discharge machining Methods 0.000 title claims description 5
- 238000000137 annealing Methods 0.000 claims description 14
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 12
- 239000011701 zinc Substances 0.000 claims description 12
- 229910052725 zinc Inorganic materials 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 2
- 229910002804 graphite Inorganic materials 0.000 claims 2
- 239000010439 graphite Substances 0.000 claims 2
- 229910052582 BN Inorganic materials 0.000 claims 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 229910003460 diamond Inorganic materials 0.000 claims 1
- 239000010432 diamond Substances 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 abstract description 9
- 239000011248 coating agent Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 16
- 229910001369 Brass Inorganic materials 0.000 description 15
- 239000010951 brass Substances 0.000 description 15
- 238000005520 cutting process Methods 0.000 description 9
- 229910000730 Beta brass Inorganic materials 0.000 description 5
- 238000005491 wire drawing Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 2
- 229910001015 Alpha brass Inorganic materials 0.000 description 1
- 229910000635 Spelter Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
- B23H7/08—Wire electrodes
Abstract
A wire electrode consists of Cu (alloy) core of alpha phase with a coating of Zn (alloy). The coating is produced so that no diffusion takes place between the core and coating. The electrode is then annealed at 500-800 degrees C using a heating up speed of at least 10 degrees /sec. and held at this temp. for 10-300 sec. depending on the required coating thickness and phase structure. It is finally cooled at a rate of above 10 degrees /sec.
Description
The present invention relates to a kind of line electrode and a kind of production line electrode, especially produce the line electrode method that is used for spark eroding technology, line electrode has one or more layers core, layer is made up of copper or copper/kirsite with remarkable α phase matrix outside the multilayer core, and by the shell of forming by zinc or kirsite.
The line electrode that is used for spark eroding technology is produced, and as general knowledge, its high-intensity core also should be a good conductor, and the composite core that core of being made by brass or the nuclear of steel are within it centered on by copper or layer of brass has proved and has been suitable for producing high strength.In order to increase the cutting power of this line electrode, a shell is coated on the core of line electrode.As general knowledge, shell is made up of zinc or kirsite.The line electrode that applies pure spelter coating has fabulous cutting power.But when the tall and big workpiece of cutting, these line electrode cutting powers just lower.Its reason is that the pure zinc evaporation of shell is rapid, thereby just depleted in very short time, to such an extent as to can only cut with its core material after making this line electrode.Thereby from first and last having lowered cutting power again.
Test shows, for tall and big workpiece, when the zinc of shell is a kind of alloy composition, can obtain higher cutting power.Verified, do shell by uniform beta brass and have superiority.Even cut tall and big workpiece, kind electrode also has fabulous cutting power.But disadvantageously, concerning producing, the cost of kind electrode is high comparatively speaking.In this case on the one hand, must keep the accurate alloy component of core; On the other hand, in order to reach a stable state, must at high temperature in a long time period, spread.This state must fix with Quench subsequently.But this phase matrix that adopts this known method accurately to control shell is very difficult.In its production process, deviation will cause also having α and/or gamma brass existence except beta brass in shell a bit.
On the one hand, the objective of the invention is to design the sort of line electrode that beginning is mentioned, it is by the higher cutting power of the line electrode of pure β phase that this line electrode has than its shell; On the other hand, the purpose of this invention is to provide a kind of method of production line electrode, by using this method, the cost of the shell of being made up of γ and ε brass is reduced effectively basically.
With regard to the method, the feature by claim 1 realizes purpose of the present invention.This line electrode is determined by the feature of claim 7 and 8.Its outer shell is by γ and ε phase composition.Preferably inertia can be arranged and hard thing also mixes this γ and ε mutually mutually, getable advantage is: concerning the material that is corroded, this electric corrosion performance and discharge performance that corrodes silk can further improve.
Select pure γ phase, if suitable, also can to the hard inert material of interpolation, verified, aspect cutting performance, it is mutually better than β.With traditional method, for example producing this pure state γ with long-time diffusion is impossible at all mutually.Usually, have α, the mixed structure of the matrix fractions of β and/or γ phase can obtain.
The invention provides a kind of method by γ or the even shell of ε brass production, the method utilization is generally the non-equilibrium state of extremely of short duration diffusion time, and unequal state is by high firing rate, and high cooling velocity and quite short temperature retention time cause.Surprisingly, ε brass at first forms, and is gamma brass then, and the gamma brass in shell has the growth rate that forms in all short diffusion times by the present invention's suggestion up to the present than beta brass much higher, afterwards, and the ratio of just checking this γ to grow mutually.Actually, relatively the boundary determined of sandwich layer and, β maintains under the detectable limit mutually, and is just revealed as quite little surplus, γ extends mutually and extends to whole shell.By adopting method of the present invention, also can intersect in the overlapping the sort of line electrode at the sort of α, β, the γ of under common diffusion annealing situation, can forbidding, produce pure ε or γ phase.
Example 1:
Core: (copper zinc 5) CuZn5; Zinc-plated 30 μ m/1.0mm;
Wire drawing: from 1.0 to 0.40mm;
Annealing: heat with speed 200k/s;
Annealing temperature=600 ℃;
Cooling velocity=300k/s;
Wire drawing: from 0.4 to 0.25mm example 2:
Core: CuZn5; Zinc-plated 30 μ m/1.0mm;
Wire drawing: from 1.2 to 0.6mm;
Annealing: heat with speed 40k/s;
Annealing temperature=800 ℃;
Cooling velocity=60k/sec;
Wire drawing: from 0.60 to 0.25mm
The present invention introduces in conjunction with the accompanying drawings, and is as follows to description of drawings:
Fig. 1 shows one of corrosion silk of the present invention cutaway view.
Fig. 2 shows the detailed structure that shell shown in Figure 1 and core have amplified,
Fig. 3 to 7 shows the fringe region layer of structure that changes with annealing time.
Fig. 2 shows original material. It is made up of with η phase cadmia layer the core of α phase brass. Heat and through as far as possible short temperature retention time after, a kind of ε zinc is at shell and core Between the zone in form (seeing Fig. 3), increase at annealing time, thereby diffusion time just Between the rise period, η phase zinc layer just changes ε zinc (seeing Fig. 4) into. In Fig. 4, meanwhile can To see that a streak mainly is that a gamma brass layer is formed on the transition region between core and the ε zinc In. In continuing annealing time, as the result of diffusion process, the expansion of gamma brass layer, thereby Make ε zinc layer change gamma brass layer (seeing Fig. 5) into. One streak beta brass is with minimum growth rate shape Be formed in the transition region between gamma brass layer and the alpha brass zinc (seeing Fig. 6).
Fig. 7 shows that shell is converted into and carves in the gamma brass layer, with regard to state shown in Figure 6, In the transition region between core and gamma brass shell, the beta brass shell has only increased a little. At last, Fig. 7 shows that this time proceeds at last, carves at this moment, and η zinc layer is decomposed in a large number, and The β crystal enlarges and forms skim on every side at core.
Relate to according to the foundation of ε of the present invention, γ or β shell and to utilize in diffusion process Uneven shape just interrupts diffusion process when desired specific shell is produced, and with this not Mean state is fixed. When this state was reached, this structure must be by cooling is next rapidly Fixing.
Although, at length open to of the present invention one specific preferred embodiment in order to illustrate , but it should be understood that the changes and improvements to disclosure that comprise the part conversion are equal List in the scope of the present invention.
Claims (12)
1. production line electrode, especially produce the line electrode method that is used for spark eroding technology, it is characterized in that this line electrode has a single or multiple lift core, form the skin that even α phase matrix is arranged by copper or copper/kirsite for one, and shell of forming by zinc or kirsite, wherein, shell is preferably in to be lower than and is coated on core when spreading temperature that occurs below the temperature; And this line electrode is then with 10 ℃ of firing rates of per second at least with preferably be no more than 800 ℃ annealing temperature more than 500 ℃ and be annealed; And the selection of annealing time changes with the variation of shell thickness to be produced and phase, is preferably in 10-300 within second; And with the cooling velocity that is higher than 10 ℃ of per seconds line electrode is cooled off subsequently.
2. method according to claim 1 is characterized in that, line electrode was drawn to final diameter after cooling period or the cooling before cooling.
3. method according to claim 1 is characterized in that, line electrode was formed before annealing.
4. method according to claim 1 is characterized in that, annealing time is selected as to produce a shell by the γ phase composition.
5. method according to claim 1 is characterized in that, annealing time is selected as can to produce the shell of a uniform ε phase composition.
6. method according to claim 1 is characterized in that, annealing time is selected as can to produce a shell by γ and ε phase composition.
7. line electrode, it is by the described method production of claim 1.
8. wire electrode, especially a kind of line electrode that is used for spark eroding, has one by one or more layers core of forming, a skin of forming by the copper or the copper/kirsite of uniform α phase composition, core is covered by a shell of being made up of kirsite and is coated with, wherein, copper/kirsite is by uniform γ phase composition.
9. the line electrode in the method according to claim 1 is characterized in that this shell is only by the γ phase composition.
10. as line electrode as described in the claim 8, it is characterized in that hard inert material is added into shell mutually.
11. as line electrode as described in the claim 10, it is characterized in that this inert material is by diamond, boron nitride mutually, (conduction) pottery or graphite are formed.
12., it is characterized in that graphite is inserted in the shell as line electrode as described in the claim 8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19510740A DE19510740A1 (en) | 1995-03-24 | 1995-03-24 | Wire electrode and method for producing a wire electrode, in particular for the spark erosion method |
| DE19510740.3 | 1995-03-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1139032A true CN1139032A (en) | 1997-01-01 |
| CN1103653C CN1103653C (en) | 2003-03-26 |
Family
ID=7757578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96107223A Expired - Lifetime CN1103653C (en) | 1995-03-24 | 1996-03-23 | Wire electrode and process for producing wire electrode, particular for spark erosion process |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0733431B1 (en) |
| JP (2) | JP3549663B2 (en) |
| KR (1) | KR100357695B1 (en) |
| CN (1) | CN1103653C (en) |
| BR (1) | BR9601113A (en) |
| DE (2) | DE19510740A1 (en) |
| ES (1) | ES2132793T3 (en) |
| RU (1) | RU2152290C1 (en) |
| TW (1) | TW359633B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402216C (en) * | 2004-02-16 | 2008-07-16 | 三越金属株式会社 | Electrode wire for wire electric discharge machining |
| CN102239024A (en) * | 2008-12-03 | 2011-11-09 | 贝尔肯霍夫股份有限公司 | Wire electrode for electric discharge cutting processes |
| CN102528190A (en) * | 2012-02-21 | 2012-07-04 | 宁波博威麦特莱科技有限公司 | Efficient multilayer composite electrode wire and preparation method thereof |
| CN106270848A (en) * | 2016-08-31 | 2017-01-04 | 宁波博威麦特莱科技有限公司 | A kind of unidirectional wire electric discharge machining polar filament and preparation method thereof |
| CN111843078A (en) * | 2020-08-28 | 2020-10-30 | 宁波博德高科股份有限公司 | Electrode wire for wire cut electrical discharge machining and preparation method thereof |
| CN112222552A (en) * | 2020-09-07 | 2021-01-15 | 宁波康强微电子技术有限公司 | Gamma electrode wire and preparation method thereof |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5945010A (en) * | 1997-09-02 | 1999-08-31 | Composite Concepts Company, Inc. | Electrode wire for use in electric discharge machining and process for preparing same |
| EP1295664B1 (en) | 2001-09-21 | 2008-03-26 | Berkenhoff GmbH | Wire electrode for electric-discharge machining |
| FR2881974B1 (en) | 2005-02-11 | 2007-07-27 | Thermocompact Sa | COMPOSITE WIRE FOR ELECTROEROSION. |
| FR2881973B1 (en) * | 2005-02-11 | 2007-05-11 | Thermocompact Sa | COMPOSITE WIRE FOR ELECTROSION |
| FR2911806B1 (en) * | 2007-01-29 | 2009-03-13 | Thermocompact Sa | ELECTRODE WIRE FOR ELECTROEROSION |
| ES2390167T3 (en) | 2008-10-01 | 2012-11-07 | Berkenhoff Gmbh | Wire electrodes for electric shock cutting |
| JP4931028B2 (en) | 2010-02-02 | 2012-05-16 | 沖電線株式会社 | Electrode wire for wire electric discharge machining, method for producing the same, and electric discharge machining method using the electrode wire |
| US20130119023A1 (en) * | 2010-07-23 | 2013-05-16 | Dandridge Tomalin | Graphitized edm wire |
| JP2014050945A (en) * | 2012-08-09 | 2014-03-20 | Sodick Co Ltd | Wire electrode |
| EP3216548B1 (en) * | 2014-11-07 | 2019-02-27 | Hitachi Metals, Ltd. | Electrode wire for electrical discharge machining and manufacturing method for same |
| EP3100813A4 (en) | 2015-01-07 | 2017-10-11 | Hitachi Metals, Ltd. | Electric discharge machining electrode wire and manufacturing method therefor |
| WO2016110963A1 (en) * | 2015-01-07 | 2016-07-14 | 日立金属株式会社 | Electric discharge machining electrode wire and manufacturing method therefor |
| EP3053688B1 (en) * | 2015-02-06 | 2019-10-09 | Agie Charmilles SA | Graphene electrode and method of producing such electrode |
| DE102015111260B4 (en) | 2015-07-13 | 2019-10-31 | Yuang Hsian Metal Industrial Corp. | Process for making an EDM electrode wire |
| JP6238938B2 (en) * | 2015-08-10 | 2017-11-29 | 元祥金屬工業股▲ふん▼有限公司 | Manufacturing method of electrode wire for electric discharge machining |
| CN107671379A (en) * | 2017-09-26 | 2018-02-09 | 宁波康强微电子技术有限公司 | The preparation method of texturing coating electrode silk |
| JP6558605B2 (en) * | 2018-02-09 | 2019-08-14 | 日立金属株式会社 | Electrode wire for electric discharge machining |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4686153A (en) * | 1984-12-08 | 1987-08-11 | Fujikura Ltd. | Electrode wire for use in electric discharge machining and process for preparing same |
| ATE79579T1 (en) * | 1987-10-23 | 1992-09-15 | Berkenhoff Gmbh | EDM ELECTRODE, ESPECIALLY WIRE ELECTRODE FOR SPARK EDM MACHINING. |
| DE3867061D1 (en) * | 1988-03-26 | 1992-01-30 | Berkenhoff Gmbh | WIRE ELECTRODE FOR EDM CUTTING. |
| EP0415501A1 (en) * | 1989-08-30 | 1991-03-06 | Charmilles Technologies S.A. | Multilayer wire electrode |
| JPH03111126A (en) * | 1989-09-27 | 1991-05-10 | Kanai Hiroyuki | Electrode wire for electric discharge machining |
| FR2679806B1 (en) * | 1991-08-02 | 1995-04-07 | Trefimetaux | HIGH PERFORMANCE COPPER ALLOY ELECTRODE FOR ELECTROEROSION MACHINING AND METHOD OF MANUFACTURE. |
-
1995
- 1995-03-24 DE DE19510740A patent/DE19510740A1/en not_active Ceased
-
1996
- 1996-03-14 DE DE59601917T patent/DE59601917D1/en not_active Expired - Lifetime
- 1996-03-14 EP EP96104026A patent/EP0733431B1/en not_active Expired - Lifetime
- 1996-03-14 ES ES96104026T patent/ES2132793T3/en not_active Expired - Lifetime
- 1996-03-22 RU RU96105957/02A patent/RU2152290C1/en active
- 1996-03-22 KR KR1019960007937A patent/KR100357695B1/en not_active IP Right Cessation
- 1996-03-23 CN CN96107223A patent/CN1103653C/en not_active Expired - Lifetime
- 1996-03-25 JP JP06872696A patent/JP3549663B2/en not_active Expired - Lifetime
- 1996-03-25 BR BR9601113A patent/BR9601113A/en not_active IP Right Cessation
- 1996-04-16 TW TW085104510A patent/TW359633B/en not_active IP Right Cessation
-
2003
- 2003-11-26 JP JP2003396045A patent/JP2004160655A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402216C (en) * | 2004-02-16 | 2008-07-16 | 三越金属株式会社 | Electrode wire for wire electric discharge machining |
| CN102239024A (en) * | 2008-12-03 | 2011-11-09 | 贝尔肯霍夫股份有限公司 | Wire electrode for electric discharge cutting processes |
| CN102239024B (en) * | 2008-12-03 | 2014-11-05 | 贝尔肯霍夫股份有限公司 | Wire electrode for electric discharge cutting processes |
| CN102528190A (en) * | 2012-02-21 | 2012-07-04 | 宁波博威麦特莱科技有限公司 | Efficient multilayer composite electrode wire and preparation method thereof |
| CN106270848A (en) * | 2016-08-31 | 2017-01-04 | 宁波博威麦特莱科技有限公司 | A kind of unidirectional wire electric discharge machining polar filament and preparation method thereof |
| CN106270848B (en) * | 2016-08-31 | 2018-05-15 | 宁波博德高科股份有限公司 | A kind of unidirectional wire electric discharge machining polar filament and preparation method thereof |
| CN111843078A (en) * | 2020-08-28 | 2020-10-30 | 宁波博德高科股份有限公司 | Electrode wire for wire cut electrical discharge machining and preparation method thereof |
| CN111843078B (en) * | 2020-08-28 | 2021-10-22 | 宁波博德高科股份有限公司 | Electrode wire for wire cut electrical discharge machining and preparation method thereof |
| CN112222552A (en) * | 2020-09-07 | 2021-01-15 | 宁波康强微电子技术有限公司 | Gamma electrode wire and preparation method thereof |
| CN112222552B (en) * | 2020-09-07 | 2022-08-26 | 宁波康强微电子技术有限公司 | Gamma electrode wire and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19510740A1 (en) | 1996-10-02 |
| CN1103653C (en) | 2003-03-26 |
| JP2004160655A (en) | 2004-06-10 |
| EP0733431A1 (en) | 1996-09-25 |
| KR960035667A (en) | 1996-10-24 |
| JP3549663B2 (en) | 2004-08-04 |
| EP0733431B1 (en) | 1999-05-19 |
| DE59601917D1 (en) | 1999-06-24 |
| JPH08318434A (en) | 1996-12-03 |
| TW359633B (en) | 1999-06-01 |
| KR100357695B1 (en) | 2003-01-24 |
| BR9601113A (en) | 1998-01-06 |
| RU2152290C1 (en) | 2000-07-10 |
| ES2132793T3 (en) | 1999-08-16 |
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Granted publication date: 20030326 |
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